1670125993 has 4 divisors (see below), whose sum is σ = 1673846100. Its totient is φ = 1666405888.

The previous prime is 1670125991. The next prime is 1670125999. The reversal of 1670125993 is 3995210761.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3995210761 = 1117 ⋅3576733.

It can be written as a sum of positive squares in 2 ways, for example, as 372181264 + 1297944729 = 19292^2 + 36027^2 .

It is a cyclic number.

It is not a de Polignac number, because 1670125993 - 2¹ = 1670125991 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1670125991) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1859380 + ... + 1860277.

It is an arithmetic number, because the mean of its divisors is an integer number (418461525).

Almost surely, 2^1670125993 is an apocalyptic number.

It is an amenable number.

1670125993 is a deficient number, since it is larger than the sum of its proper divisors (3720107).

1670125993 is an equidigital number, since it uses as much as digits as its factorization.

1670125993 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3720106.

The product of its (nonzero) digits is 102060, while the sum is 43.

The square root of 1670125993 is about 40867.1750063544. The cubic root of 1670125993 is about 1186.4508315934.

The spelling of 1670125993 in words is "one billion, six hundred seventy million, one hundred twenty-five thousand, nine hundred ninety-three".